Ethylene copolymer composition
CA 2103401 C · Owner: Takahashi, Mamoru · Inventors: Tsutsui, Toshiyuki; Ohta, Seiji; Ikeyama, Seiichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An ethylene copolymer composition comprising an ethylene/.alpha.-olefin copolymer A1 obtained by using a catalyst for olefin polymerization containing an organoaluminum oxy-compound (a) and at least two kinds of specific metallocene compounds (b) and one (co)polymer selected from the group consisting of B1 a low-density polyethylene obtained by high-pressure radical polymerization B2 a crystalline polyolefin and B3 an olefin type elastomer. An ethylene copolymer composition comprising an ethylene/.alpha.-olefin copolymer A2 having specific properties and one (co)polymer selected from the group consisting of B1 a low-density polyethylene obtained by high-pressure radical polymerization B2 a …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed November 18, 1993 and granted December 17, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 18, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 18, 2015.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.